Institute of Plant Sciences, University of Bern, Bern, Switzerland.
Institute of Plant Sciences, University of Bern, Bern, Switzerland.
Curr Opin Plant Biol. 2022 Oct;69:102278. doi: 10.1016/j.pbi.2022.102278. Epub 2022 Aug 12.
Epigenetic marks influence gene regulation and genomic stability via the repression of transposable elements. During sexual reproduction, tight regulation of the epigenome must take place to maintain the repression of transposable elements while still allowing changes in cell-specific transcriptional programs. In plants, epigenetic marks are reorganized during reproduction and a reinforcing mechanism takes place to ensure transposable elements silencing. In this review, we describe the latest advances in characterizing the cell-specific epigenetic changes occurring from sporogenesis to seed development, with a focus on DNA methylation. We highlight the epigenetic co-regulation between transposable elements and developmental genes at different stages of plant reproduction.
表观遗传标记通过抑制转座元件来影响基因调控和基因组稳定性。在有性生殖过程中，必须对表观基因组进行严格的调控，以维持转座元件的抑制，同时允许细胞特异性转录程序发生变化。在植物中，表观遗传标记在繁殖过程中进行重组，并发生强化机制以确保转座元件沉默。在这篇综述中，我们描述了在从孢子发生到种子发育过程中描述细胞特异性表观遗传变化的最新进展，重点是 DNA 甲基化。我们强调了转座元件和发育基因在植物繁殖不同阶段的表观遗传共同调控。
